反射信号和高速干扰的振幅和波形随着炮检距的增大而变化。

Reflection signals and high velocity noise change in amplitude and waveform with increasing offset between source and receiver.

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在观测系统设计过程中还要考虑方位角、炮检距等分布规律的影响。

In a process of setup design it must consider the influence of distributing rule of azimuth and offset.

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采用同炮检距道集进行迭代叠加和乘模型系数道叠加，可以提高速度分析的精度。

The velocity analysis accuracy may be raised by applying iterative stacking method and multiplying model trace stacking method to common-range gathers.

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